JP2004289830A - マルチキャスト・モードをサポートしている通信システムのための伝送方法 - Google Patents
マルチキャスト・モードをサポートしている通信システムのための伝送方法 Download PDFInfo
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
- E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
- E03C1/12—Plumbing installations for waste water; Basins or fountains connected thereto; Sinks
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- E03C1/266—Arrangement of disintegrating apparatus in waste pipes or outlets; Disintegrating apparatus specially adapted for installation in waste pipes or outlets
- E03C1/2665—Disintegrating apparatus specially adapted for installation in waste pipes or outlets
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/02—Details
- H04L12/16—Arrangements for providing special services to substations
- H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast
- H04L12/1863—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast comprising mechanisms for improved reliability, e.g. status reports
- H04L12/1868—Measures taken after transmission, e.g. acknowledgments
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1854—Scheduling and prioritising arrangements
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/189—Transmission or retransmission of more than one copy of a message
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
Abstract
【解決手段】マルチキャスト・メッセージへのシグナリングメッセージ は、固定回数のマルチキャスト・メッセージ伝送に応答して伝送することが可能であり、固定回数の伝送後、マルチキャスト・メッセージを受け取っていない受信機105は、追加の所与の回数までさらに再送するように要求することができる。さらに、シグナリングメッセージ は、異なる時間に送信するか、または受信機105の無線状態に基づいてずらすことが可能である。たとえば、第1のマルチキャスト・メッセージを送信し、受信機105のグループからの応答を所与の期間聴取した後、次のマルチキャスト・メッセージおよび第1のマルチキャスト・メッセージの一部のうちの1つをグループに送信することができる。
【選択図】図1
Description
Claims (10)
- マルチキャスト・メッセージを再送する方法であって、
マルチキャスト・メッセージの受信機(105)の数に基づいて、マルチキャスト・メッセージの再送回数を変更するステップを含む方法。 - 前記変更するステップは、マルチキャスト・メッセージを受信する受信機(105)のグループのグループ・サイズ(S)に基づいて、再送の回数を固定するステップをさらに含み、
前記固定するステップは、
前記グループ・サイズ(S)をしきい値(Th)と比較するステップ、および
前記マルチキャスト・メッセージを前記固定された数だけダウンリンク・チャネル上で前記グループに再送するステップをさらに含み、S≧Thの場合は、さらに、
マルチキャスト・メッセージのさらなる伝送を要求するために、肯定応答(ACK)および否定応答(NACK)のうちの1つを受信するステップを含む、請求項1に記載の方法。 - マルチキャスト・モードをサポートしている通信システムのための自動化反復要求(ARQ)伝送方法であって、
受信機(105)のグループにおいて、固定された回数Nのマルチキャスト・メッセージの伝送を受信するステップ、および
前記固定された回数の伝送後、データ・パケットのすべてを受け取っていないグループのユーザから、受け取ったマルチキャスト・メッセージを追加回数Δまでさらに伝送することを要求するための、シグナリングメッセージを送信するステップを含む方法。 - 前記Nおよび前記Δは、前記ユーザのグループ・サイズ(S)、遅延制約、および前記グループの無線状態のうちの少なくとも1つの関数であり、
前記固定された回数はSとしきい値(Th)との比較に基づくものであり、
前記グループは前記N回の伝送を受け取り、N回の伝送後にまだデータ・パケットを受け取っていない前記グループのユーザが、マルチキャスト・メッセージを追加回数Δまでさらに伝送することを要求するために、肯定応答(ACK)および否定応答(NACK)のうちの1つをさらに送信し、S≧Thの場合は、さらに、
前記送信するステップは、受け取ったマルチキャスト・メッセージのさらなる伝送を要求するために、肯定応答(ACK)および否定応答(NACK)のうちの1つを送信するステップをさらに含む、請求項3に記載の方法。 - 伝送されたマルチキャスト・メッセージに応答してシグナリングメッセージ を受け取る方法であって、
伝送されたマルチキャスト・メッセージの受信機(105)の無線状態に基づいて、異なる時間に、1つまたは複数の受信機(105)からのシグナリングメッセージ を受け取るステップを含む方法。 - 1人または複数のユーザについてマルチキャスト・モードをサポートする通信システムのための自動化反復要求(ARQ)伝送方法であって、
最も悪い無線状態に基づいてマルチキャスト・メッセージを受け取るために、前記ユーザをN個のグループに順序付けするステップ、および
最初に伝送するグループが最も悪い無線状態を有するグループであるような順序付けに基づいて、シグナリングメッセージ の伝送をずらすステップを含む方法。 - 前記伝送をずらすステップは、各グループのユーザが、特定グループが伝送する順番になったときに、肯定応答(ACK)および否定応答(NACK)のうちの1つを伝送するステップをさらに含む、請求項6に記載の方法。
- 前記伝送をずらすステップは、各グループのユーザが、特定グループが伝送する順番になったときに、受け取ったマルチキャスト・メッセージの再送を要求するために、否定応答(NACK)のみを伝送するステップ、および、N×K個のタイムスロットのいずれにおいても送信側によってNACKが検出されなくなるまで、同じNACKをK回まで繰り返し伝送するステップをさらに含む、請求項6に記載の方法。
- マルチキャスト・メッセージを伝送する方法であって、
第1のマルチキャスト・メッセージを受信機(105)の1つまたは複数のグループに伝送する第1の伝送ステップ、
前記グループのグループ・サイズおよび遅延制約のうちの少なくとも1つに基づいた所与の期間、前記グループからの応答を聴取するステップ、および
次のマルチキャスト・メッセージと、前記応答に基づいた前記第1のマルチキャスト・メッセージの一部とのうちの1つを伝送する第2の伝送ステップを含む方法。 - 前記所与の期間はN×K個のタイムスロットから構成され、Nは前記第1のマルチキャスト・メッセージの受信機(105)のグループ数であり、Kは前記第1のマルチキャスト・メッセージと次のマルチキャスト・メッセージの伝送間の遅延を表す遅延制約パラメータであって、
前記第1の伝送ステップは、前記第1のマルチキャスト・メッセージの開始データ・ブロックをすべてのグループに伝送するステップを含み、
前記聴取するステップは、前記応答で否定応答(NACK)が受信されたかどうかを判定するステップを含み、
前記第2の伝送ステップは、
前記N×K個のタイムスロットのうちのいずれかでNACKが検出された場合には、前記第1のマルチキャスト・メッセージの次のデータ・ブロックを伝送し、前記N×K個のタイムスロットのいずれにおいてもNACKが検出されない場合には、前記次のマルチキャスト・メッセージを前記受信機グループに伝送することをさらに含む、請求項9に記載の方法。
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US10/391,766 US7894468B2 (en) | 2003-03-20 | 2003-03-20 | Transmission methods for communication systems supporting a multicast mode |
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Also Published As
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EP1460791A3 (en) | 2004-11-03 |
EP2234307A1 (en) | 2010-09-29 |
EP1460791A2 (en) | 2004-09-22 |
EP1460791B1 (en) | 2014-04-02 |
US20040184471A1 (en) | 2004-09-23 |
KR20040083360A (ko) | 2004-10-01 |
US7894468B2 (en) | 2011-02-22 |
EP2234307B1 (en) | 2015-04-01 |
JP4549706B2 (ja) | 2010-09-22 |
KR101098294B1 (ko) | 2011-12-26 |
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